Question

Find x pls I'm preparing for a test ;-;

Answer 1

x = 5

Explanation:

12² + x² = 13²

144 + x² = 169

144 - 144 + x² = 169 - 144

x² = 25

√x² = √25

x = 5

Answer 2

x = 5

Explanation:

13^2 - 12 ^2 = x^2

169 - 144 = x^2

25 = x^2

`√(25) = √(x^2)`

x = 5